Add Default user (optional)

namespace :db do
task :seed => :environment do
load "#{Rails.root}/db/seeds.rb"
end
end

rake db:seed

Test application

Start web server
rails s

In browser go to: localhost:3000/welcome/index

This should redirect to the Devise 'Sign up' form :)

Scaffold some app code

Now off to test the Cream functionality

Scaffold a Blog model using the mongo_mapper:model generator from rails3-generators (included by mm-devise)
A Blog consists of Posts, with an :index action listing all blog Posts, and :show to show an individual blog Post
rails g scaffold Post title:string body:string --orm mongo_mapper